Simplify Optional.h.
Simplify Optional.h.

Putting T inside an anonymous union is enough to suppress its implicit value semantics--no need for aligned_storage shenanigans.

Swift SVN r4358

felix91gr/swift,tinysun212/swift-windows,tardieu/swift,brentdax/swift,modocache/swift,tinysun212/swift-windows,ken0nek/swift,practicalswift/swift,tjw/swift,Ivacker/swift,milseman/swift,uasys/swift,jmgc/swift,swiftix/swift,swiftix/swift,tkremenek/swift,gmilos/swift,tardieu/swift,KrishMunot/swift,return/swift,jopamer/swift,adrfer/swift,swiftix/swift.old,danielmartin/swift,huonw/swift,CodaFi/swift,xwu/swift,huonw/swift,parkera/swift,atrick/swift,natecook1000/swift,jckarter/swift,kperryua/swift,shahmishal/swift,harlanhaskins/swift,IngmarStein/swift,alblue/swift,modocache/swift,aschwaighofer/swift,tinysun212/swift-windows,xedin/swift,rudkx/swift,Jnosh/swift,Ivacker/swift,tinysun212/swift-windows,ahoppen/swift,emilstahl/swift,alblue/swift,brentdax/swift,adrfer/swift,hughbe/swift,natecook1000/swift,cbrentharris/swift,LeoShimonaka/swift,lorentey/swift,djwbrown/swift,JGiola/swift,IngmarStein/swift,kentya6/swift,JGiola/swift,manavgabhawala/swift,harlanhaskins/swift,ben-ng/swift,IngmarStein/swift,ken0nek/swift,danielmartin/swift,LeoShimonaka/swift,devincoughlin/swift,jtbandes/swift,tkremenek/swift,austinzheng/swift,tardieu/swift,lorentey/swift,gottesmm/swift,allevato/swift,Ivacker/swift,sschiau/swift,codestergit/swift,SwiftAndroid/swift,karwa/swift,huonw/swift,khizkhiz/swift,johnno1962d/swift,sdulal/swift,slavapestov/swift,milseman/swift,kstaring/swift,nathawes/swift,IngmarStein/swift,OscarSwanros/swift,devincoughlin/swift,sdulal/swift,therealbnut/swift,sschiau/swift,codestergit/swift,kstaring/swift,return/swift,amraboelela/swift,austinzheng/swift,codestergit/swift,mightydeveloper/swift,hooman/swift,aschwaighofer/swift,roambotics/swift,mightydeveloper/swift,arvedviehweger/swift,natecook1000/swift,OscarSwanros/swift,karwa/swift,khizkhiz/swift,shahmishal/swift,devincoughlin/swift,brentdax/swift,tjw/swift,russbishop/swift,jckarter/swift,johnno1962d/swift,swiftix/swift.old,hughbe/swift,jmgc/swift,rudkx/swift,OscarSwanros/swift,bitjammer/swift,slavapestov/swift,modocache/swift,JaSpa/swift,sschiau/swift,lorentey/swift,ben-ng/swift,arvedviehweger/swift,gmilos/swift,uasys/swift,stephentyrone/swift,frootloops/swift,KrishMunot/swift,practicalswift/swift,devincoughlin/swift,arvedviehweger/swift,apple/swift,amraboelela/swift,huonw/swift,natecook1000/swift,roambotics/swift,ken0nek/swift,calebd/swift,CodaFi/swift,sdulal/swift,atrick/swift,emilstahl/swift,milseman/swift,swiftix/swift.old,frootloops/swift,emilstahl/swift,khizkhiz/swift,Jnosh/swift,calebd/swift,aschwaighofer/swift,johnno1962d/swift,brentdax/swift,austinzheng/swift,kperryua/swift,KrishMunot/swift,hughbe/swift,codestergit/swift,alblue/swift,MukeshKumarS/Swift,deyton/swift,huonw/swift,Jnosh/swift,milseman/swift,allevato/swift,emilstahl/swift,swiftix/swift,uasys/swift,shajrawi/swift,OscarSwanros/swift,Jnosh/swift,cbrentharris/swift,nathawes/swift,gregomni/swift,MukeshKumarS/Swift,slavapestov/swift,gribozavr/swift,tkremenek/swift,felix91gr/swift,return/swift,arvedviehweger/swift,stephentyrone/swift,milseman/swift,harlanhaskins/swift,airspeedswift/swift,glessard/swift,zisko/swift,JaSpa/swift,tinysun212/swift-windows,tardieu/swift,xedin/swift,shajrawi/swift,gribozavr/swift,lorentey/swift,swiftix/swift.old,return/swift,gmilos/swift,xwu/swift,brentdax/swift,jtbandes/swift,kperryua/swift,uasys/swift,shahmishal/swift,mightydeveloper/swift,codestergit/swift,OscarSwanros/swift,arvedviehweger/swift,alblue/swift,JGiola/swift,parkera/swift,austinzheng/swift,xedin/swift,nathawes/swift,sschiau/swift,jopamer/swift,djwbrown/swift,tkremenek/swift,jckarter/swift,kusl/swift,russbishop/swift,kstaring/swift,danielmartin/swift,MukeshKumarS/Swift,cbrentharris/swift,ben-ng/swift,kstaring/swift,johnno1962d/swift,felix91gr/swift,kusl/swift,JaSpa/swift,MukeshKumarS/Swift,arvedviehweger/swift,benlangmuir/swift,allevato/swift,ahoppen/swift,jckarter/swift,ahoppen/swift,hughbe/swift,JGiola/swift,rudkx/swift,emilstahl/swift,austinzheng/swift,deyton/swift,manavgabhawala/swift,xedin/swift,amraboelela/swift,sdulal/swift,lorentey/swift,stephentyrone/swift,gribozavr/swift,karwa/swift,kentya6/swift,Jnosh/swift,gribozavr/swift,adrfer/swift,natecook1000/swift,ben-ng/swift,glessard/swift,KrishMunot/swift,JaSpa/swift,airspeedswift/swift,huonw/swift,apple/swift,kperryua/swift,mightydeveloper/swift,codestergit/swift,gottesmm/swift,tinysun212/swift-windows,danielmartin/swift,shahmishal/swift,djwbrown/swift,dduan/swift,kentya6/swift,jtbandes/swift,swiftix/swift,sschiau/swift,rudkx/swift,mightydeveloper/swift,aschwaighofer/swift,nathawes/swift,brentdax/swift,felix91gr/swift,hughbe/swift,tjw/swift,practicalswift/swift,kusl/swift,aschwaighofer/swift,ahoppen/swift,tjw/swift,tinysun212/swift-windows,shahmishal/swift,SwiftAndroid/swift,felix91gr/swift,therealbnut/swift,benlangmuir/swift,khizkhiz/swift,gregomni/swift,kperryua/swift,Jnosh/swift,ben-ng/swift,gribozavr/swift,danielmartin/swift,aschwaighofer/swift,jmgc/swift,swiftix/swift.old,therealbnut/swift,tkremenek/swift,LeoShimonaka/swift,hooman/swift,allevato/swift,gmilos/swift,modocache/swift,roambotics/swift,CodaFi/swift,Ivacker/swift,kusl/swift,deyton/swift,frootloops/swift,rudkx/swift,kentya6/swift,shahmishal/swift,SwiftAndroid/swift,danielmartin/swift,cbrentharris/swift,cbrentharris/swift,benlangmuir/swift,tkremenek/swift,shahmishal/swift,gregomni/swift,dduan/swift,practicalswift/swift,bitjammer/swift,karwa/swift,alblue/swift,tardieu/swift,cbrentharris/swift,kperryua/swift,felix91gr/swift,calebd/swift,practicalswift/swift,jopamer/swift,modocache/swift,dduan/swift,russbishop/swift,djwbrown/swift,jopamer/swift,calebd/swift,mightydeveloper/swift,xwu/swift,adrfer/swift,dduan/swift,LeoShimonaka/swift,dreamsxin/swift,manavgabhawala/swift,stephentyrone/swift,parkera/swift,kperryua/swift,tjw/swift,karwa/swift,JaSpa/swift,Ivacker/swift,uasys/swift,atrick/swift,tkremenek/swift,arvedviehweger/swift,codestergit/swift,shajrawi/swift,sschiau/swift,KrishMunot/swift,Ivacker/swift,gottesmm/swift,amraboelela/swift,russbishop/swift,KrishMunot/swift,airspeedswift/swift,jtbandes/swift,CodaFi/swift,lorentey/swift,gribozavr/swift,ahoppen/swift,jmgc/swift,slavapestov/swift,atrick/swift,manavgabhawala/swift,gottesmm/swift,slavapestov/swift,zisko/swift,uasys/swift,shajrawi/swift,russbishop/swift,karwa/swift,allevato/swift,uasys/swift,airspeedswift/swift,bitjammer/swift,alblue/swift,IngmarStein/swift,kstaring/swift,swiftix/swift,MukeshKumarS/Swift,benlangmuir/swift,brentdax/swift,MukeshKumarS/Swift,LeoShimonaka/swift,russbishop/swift,MukeshKumarS/Swift,benlangmuir/swift,apple/swift,zisko/swift,kusl/swift,therealbnut/swift,harlanhaskins/swift,stephentyrone/swift,JGiola/swift,SwiftAndroid/swift,atrick/swift,modocache/swift,amraboelela/swift,parkera/swift,atrick/swift,mightydeveloper/swift,cbrentharris/swift,glessard/swift,practicalswift/swift,bitjammer/swift,glessard/swift,xedin/swift,hooman/swift,bitjammer/swift,return/swift,ken0nek/swift,shajrawi/swift,jtbandes/swift,JaSpa/swift,tjw/swift,gribozavr/swift,austinzheng/swift,harlanhaskins/swift,sschiau/swift,khizkhiz/swift,sdulal/swift,jmgc/swift,calebd/swift,deyton/swift,kentya6/swift,amraboelela/swift,practicalswift/swift,xedin/swift,kusl/swift,swiftix/swift,deyton/swift,adrfer/swift,natecook1000/swift,gregomni/swift,apple/swift,parkera/swift,zisko/swift,deyton/swift,tardieu/swift,apple/swift,calebd/swift,johnno1962d/swift,felix91gr/swift,khizkhiz/swift,return/swift,dduan/swift,hooman/swift,dduan/swift,devincoughlin/swift,kusl/swift,manavgabhawala/swift,gottesmm/swift,apple/swift,shajrawi/swift,jtbandes/swift,kstaring/swift,gmilos/swift,xedin/swift,airspeedswift/swift,ken0nek/swift,sdulal/swift,manavgabhawala/swift,CodaFi/swift,parkera/swift,devincoughlin/swift,djwbrown/swift,dreamsxin/swift,parkera/swift,CodaFi/swift,zisko/swift,hughbe/swift,sschiau/swift,jckarter/swift,gregomni/swift,danielmartin/swift,mightydeveloper/swift,gmilos/swift,emilstahl/swift,LeoShimonaka/swift,amraboelela/swift,emilstahl/swift,manavgabhawala/swift,xedin/swift,lorentey/swift,zisko/swift,alblue/swift,kstaring/swift,jopamer/swift,devincoughlin/swift,frootloops/swift,frootloops/swift,milseman/swift,austinzheng/swift,adrfer/swift,ken0nek/swift,roambotics/swift,jopamer/swift,dduan/swift,JaSpa/swift,gregomni/swift,tjw/swift,airspeedswift/swift,JGiola/swift,glessard/swift,kentya6/swift,ben-ng/swift,calebd/swift,natecook1000/swift,roambotics/swift,glessard/swift,therealbnut/swift,djwbrown/swift,swiftix/swift.old,milseman/swift,kusl/swift,rudkx/swift,SwiftAndroid/swift,hughbe/swift,slavapestov/swift,ben-ng/swift,johnno1962d/swift,sdulal/swift,Ivacker/swift,KrishMunot/swift,swiftix/swift.old,return/swift,benlangmuir/swift,xwu/swift,jmgc/swift,Ivacker/swift,emilstahl/swift,hooman/swift,khizkhiz/swift,zisko/swift,Jnosh/swift,aschwaighofer/swift,bitjammer/swift,modocache/swift,LeoShimonaka/swift,huonw/swift,slavapestov/swift,gottesmm/swift,kentya6/swift,jmgc/swift,nathawes/swift,IngmarStein/swift,russbishop/swift,swiftix/swift.old,jtbandes/swift,hooman/swift,stephentyrone/swift,gmilos/swift,djwbrown/swift,ken0nek/swift,CodaFi/swift,sdulal/swift,lorentey/swift,jckarter/swift,therealbnut/swift,stephentyrone/swift,johnno1962d/swift,gottesmm/swift,cbrentharris/swift,xwu/swift,swiftix/swift,bitjammer/swift,airspeedswift/swift,allevato/swift,devincoughlin/swift,kentya6/swift,nathawes/swift,jckarter/swift,parkera/swift,shajrawi/swift,IngmarStein/swift,therealbnut/swift,deyton/swift,xwu/swift,karwa/swift,hooman/swift,frootloops/swift,SwiftAndroid/swift,shajrawi/swift,harlanhaskins/swift,LeoShimonaka/swift,tardieu/swift,gribozavr/swift,xwu/swift,allevato/swift,roambotics/swift,frootloops/swift,nathawes/swift,harlanhaskins/swift,ahoppen/swift,SwiftAndroid/swift,OscarSwanros/swift,karwa/swift,shahmishal/swift,OscarSwanros/swift,jopamer/swift,practicalswift/swift,adrfer/swift